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Viagra is one of the most widespread medical preparations that comes to mind at once when men start thinking about such unpleasant male problem as erectile dysfunction. This was the first medicine that appeared on the market to cure the conditions of this type and with years its popularity has become incredible. Actually, now we can speak about the phenomenon of Viagra that influenced the whole industry.

Viagra tablets contain the active ingredient sildenafil, which is a medicine used in the treatment of erectile dysfunction (impotence). Sildenafil is also available without a brand name, ie as the generic medicine.

Sildenafil is called a phosphodiesterase type 5 inhibitor, and works by preventing the action of a chemical in the body called phosphodiesterase type 5.An erection is produced via a complex chain of events, involving signals from the nervous system and the release of chemical messengers within the tissues of the penis. One of these chemical messengers is called cyclic GMP.                                                       << See Details >>

Viagra. | Dr. Brain Morris : 

Use in adults "The recommended dose is 50 mg taken as needed approximately one hour before sexual activity. Based on efficacy and tolerability, the dose may be increased to 100 mg or decreased to 25 mg. The maximum recommended dose is 100 mg. The maximum recommended dosing frequency is once per day."

How Viagra Works "Originally studied for use in people with high blood pressure and cardiac problems, Viagra works by increasing the blood flow to the penis for four to six hours, and during this interval, it usually becomes much easier to achieve a satisfactory erection with sexual stimulation. It only works if the man is sexually stimulated, so it will not cause an erection by just taking the pill."

How quickly does it work? "On average, Viagra becomes effective in just under an hour when you take a tablet on an empty stomach. Viagra can remain effective for between four and six hours. If you take it after a meal that has a high fat content, it may take longer than an hour to become effective."

Why are there different doses? "Viagra is available in three dosages: 25mg, 50mg and 100mg. Some men may respond to a lower dose of Viagra. Some men may already be taking medicines that interact with Viagra and thus need to adjust the Viagra dosage they are taking."

How to Take Viagra "The medication is taken orally in pill form. It will usually start working within 30 minutes to an hour. Only take one Viagra tablet in 24 hours."

Common Side Effects "The most common side effects of Viagra are headache, facial flushing, dizziness, visual problems (such as blurred vision, bluish vision and sensitivity to light), nasal congestion, and an upset stomach."

Dr Brian Morris 

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